Suture Needles
MICRO-HONED SURGICAL NEEDLES OVERVIEW
Richard Allan disposable eyed
surgical needles are the most reliable, most varied in style and sizes, most
service-orientated, and highest quality eyed surgical needle on the market
today. Our reputation for continual excellence in these areas is well deserved.
| Features |
Benefit |
Comparison with Carbon needles |
MicroHone
Process |
Guaranteed smoothness in their passage through tissue. Each smooth passage reduces tissues trauma |
Carbon needles Pull through force = 5 N for cutting needles.
Our needles force = 0.4 N for the same needle type. |
Reverse
Cutting Point |
Sharp
enough to penetrate tissues with minimal resistance. Flat surface
closest to the incision reduces the danger of tissue cut-out. Also, the
hole left by this needle point leaves a wide wall of tissue for the
suture to be tied against.
|
Carbon needles Penetration force
= 9.2 N on a 0.043” dia needle, the hole produced showed signs of
tearing.
Our Penetration force = 5 N on
the same needle type, the hole produced was cut with a clean edge.
|
|
Taper Point |
Used
primarily on soft, easily penetrated tissues; such as, the peritoneum,
intestine, and heart.
Preferred where the smallest possible hole in the tissue with minimum
tissue damage is required. |
Penetration force was similar for both makes, however this is not
important as taper point needles are used primarily on soft tissue. |
|
Trocar Point |
Most
aggressive cutting point needle on the market. Designed for tough tissue
where a cutting point is needed and a round bodied needle is desirable. |
No
difference |
|
Top
Quality
Stainless Steel |
Clean
electro-polished and corrosion resistant to prevent infection |
Carbon Steel is only 2% stronger in tensile strength compared with our
grade of Stainless steel.
Carbon Steel is Nickel plated, and repeated exposure to skin can cause
an allergic contact dermatitis. |
|
Toughened
heat treatment |
The
heat treatment processing obtains the maximum toughness for the
stainless steel, however it also incorporates some needle flexibility.
The result for our customers – Rigid
enough to resist bending, yet flexible
to bend before breaking. |
Carbon needles break when subjected to our bend test.
Our
needles can be clamped with needle holders and pressure applied to the
tip, the rigid properties requires an excessive force to be applied, and
even then the needle will bend over 45 deg before it breaks. |
|
Spring eye
design |
The
spring eye (French eye) is known for its speed and ease of loading
suture. There are ridges inside the eye that catch and hold the suture
in place. |
2
needles in 18 of Carbon needle samples failed to hold the suture
material.
Our
needles are 100% inspected and tested to ensure zero defects. |
PROPER USE OF NEEDLE HOLDER
Improper surgical technique in
the use of a suturing needle, may result in needle breakage. Improper needle
selection for the surgery intended may also result in needle breakage.
Needle selection is the decision and responsibility of the surgeon.
Should breakage occur, the broken portion of the needle may lodge in the
patient. Small needle holders should be used on fine gauge needles and heavy
holders on heavy gauge needles to avoid needle breakage because of undue stress.
The weakest part of a needle is the eye and the point. Needles are manufactured
with a flat area on the shank to facilitate proper clamping with holder and to
prevent turning in holder. The needle holder should be applied on the needle
flat part about ¼ of length of needle from the eyed end.
DO NOT CLAMP HOLDER DIRECTLY ON THE EYE
OTHERWISE BREAKAGE MAY OCCUR.
When
withdrawing needle, clamp needle on shank about ¼ length from the point.
DO NOT GRASP NEEDLE POINT OTHERWISE
BREAKAGE MAY OCCUR.
|
